An IgM class monoclonal antibody which specificallyreacts with mucus glycoproteins produced by human gastricgland-type mucous cells is provided. By performingimmunohistochemical staining using a labeled derivative ofthe monoclonal antibody, human gastric gland-type mucouscells as well as mucus secreted by these cells can bespecifically stained. The monoclonal antibody can also beused for the analysis of gastric gland-type mucous cell-derivedmucus glycoproteins in human body fluids as well asfor the examination or diagnosis of cancer.
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